Spark plugs fouled??
Ok so, thing is I let my friend barrow my
car.. I always run 93 cuz it runs better
with turbo. He put 87 in it. I told him that
was a no. So I put octane booster and a
fuel injector cleaner at the same time, is
that bad?? So car runs rough.. would it
mess the plugs up. This is how they look.
Are they bad??